Peribiliary cysts

Case contributed by Mostafa Elfeky
Diagnosis almost certain

Presentation

History of metastases of unknown primary. Prior PET-CT showed hepatic cysts versus hemangioma. For MRI assessment.

Patient Data

Age: 80 years
Gender: Female

Lliver

mri
This study is a stack
Axial
T2
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Coronal
T2
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Axial T2
fat sat
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Axial
DWI
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Axial
ADC
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Axial T1
fat sat
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Axial T1C+
fs arterial
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Axial T1C+ fs
Portovenous phase
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Axial T1 C+
fs delayed
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Heavily T2
thin cuts
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3D - MIP
Heavily T2
This study is a stack
Coronal
Heavily T2 MIP
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Info

Clustered cysts are noted on both sides of the hilar portal vein and its left branch, largest reaching 1.5 cm. These are associated with:

  • subtle biliary ectasia at its periphery
  • small scattered cysts in all hepatic segments, all <1 cm
  • no definite ductal communications
  • no stones or masses

Case Discussion

Features of non-suspicious peribiliary cysts and small scattered simple hepatic cysts. Peribiliary cysts are a rare incidental finding of cyst formation around intrahepatic biliary ductules in a hilar distribution lacking any communication with the biliary tree.

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